<!DOCTYPE html>
<html lang="en">
<head>
	<meta charset="UTF-8">
	<meta name="viewport" content="width=device-width, initial-scale=1.0">
	<title>Document</title>
	<link rel="stylesheet" href="style.css">
	<style>
		.test-outside {
			background-color: red;
		}
	</style>
</head>
<body>
	<div class="test-outside" style="background-color: blue;"></div>
</body>
</html>